CN114322698B - Fir-type blade root blade molded line measuring and fixing clamp - Google Patents
Fir-type blade root blade molded line measuring and fixing clamp Download PDFInfo
- Publication number
- CN114322698B CN114322698B CN202111572942.3A CN202111572942A CN114322698B CN 114322698 B CN114322698 B CN 114322698B CN 202111572942 A CN202111572942 A CN 202111572942A CN 114322698 B CN114322698 B CN 114322698B
- Authority
- CN
- China
- Prior art keywords
- blade root
- blade
- positioning seat
- tooth block
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a fixture for measuring and fixing a molded line of a fir-type blade root blade, which relates to a fixture for a turbine blade, and aims to solve the problems that a turbine blade adopts a horizontal measuring tool and is affected by the fact that the dimensional tolerance between a blade top pinhole and a blade root center line is +/-0.1 mm, and the measured value of a blade crown assembly surface is inaccurate when the original measuring tool measures the molded line, and the fixture comprises a blade root positioning seat, a jacking bolt, a measuring tool body and a tooth block; the measuring tool is arranged vertically, the blade root positioning seat is arranged at the top end of the measuring tool, the tooth block is embedded on the blade root positioning seat, the threaded connection of the jacking bolt is arranged on the blade root positioning seat, the threaded end of the jacking bolt is jacked on the upper end face of the tooth block, and the fir tree blade root is arranged vertically on the blade root positioning seat and the tooth block. The invention is used in the field of steam turbines.
Description
Technical Field
The invention relates to a turbine blade clamp, in particular to a fir-tree type blade root blade profile measuring and fixing clamp, and belongs to the field of turbines.
Background
The total length of the turbine blades of a certain unit on the existing turbine is 450mm, the length of a steam channel is 380mm, and the traditional molded line detection method is horizontal measurement, and is positioned by an internal tooth shape and clamped by a back tooth shape. The top of the blade crown is measured by a thimble jacking mode, but due to the influence of reference conversion and other factors in the processing of the tooth form of the blade root and the thimble hole, the reachable dimensional tolerance between the thimble hole of the blade and the center line of the blade root is +/-0.1 mm, and the distance tolerance between the profile line of the blade crown and the center line is only +/-0.05 mm, when the original measuring tool is used for measuring the profile, the measured value of the assembly surface of the blade crown is inaccurate due to the deviation of the thimble position, and the clamp is needed to be provided for improving the measurement.
Disclosure of Invention
The invention aims to solve the problem that the measurement value of the assembly surface of the blade crown is inaccurate when the original gauge measures the molded line due to the fact that the horizontal gauge is adopted by the turbine blade and the dimensional tolerance between a blade top pinhole and a blade root center line is +/-0.1 mm, and further provides a fir-type blade root molded line measuring and fixing clamp.
The technical problems are solved by the following scheme:
the device comprises a blade root positioning seat, a jacking bolt, a measuring tool body and a tooth block; the measuring tool is arranged vertically, the blade root positioning seat is arranged at the top end of the measuring tool, the tooth block is embedded on the blade root positioning seat, the threaded connection of the jacking bolt is arranged on the blade root positioning seat, the threaded end of the jacking bolt is jacked on the upper end face of the tooth block, and the fir tree blade root is arranged vertically on the blade root positioning seat and the tooth block.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the measuring tool positioning and clamping method, the full-tooth-shaped sleeve gauge is used as a positioning block, the blade root positioning seat 1, the jacking bolts 2, the measuring tool body 3 and the tooth block 8 are used for fixing, the blade root and the back tooth-shaped working face are used for positioning simultaneously during measurement, the blade assembly method is simulated, the six-o' clock blade is vertically placed, the self gravity of the blade and the special clamping device are used for clamping, the working face of the blade and the positioning face of the measuring tool are guaranteed to be fully attached, and the standard sample piece is manufactured for calibrating the measuring tool. The influence of internal tooth form clamping and blade top pinhole misalignment on measurement accuracy is eliminated, so that the molded line measurement accuracy is improved to 0.02mm from original 0.1mm, and the quality control of a single blade in the processing process is ensured.
2. The measuring tool is changed from the former horizontal measurement to the vertical measurement, and the moment brought by the gravity center of the blade placement is changed into the force downwards from the vertical through changing the placement form of the measuring tool, so that the positioning surface is more tightly attached.
3. The full-tooth-shaped positioning block is used for replacing the original half-tooth positioning, and the other half-tooth clamping mode is adopted, so that the phenomenon of staggered teeth caused in the half-tooth block clamping process is avoided, the blade crown is deflected along the radial direction of the inner back, and the blade root tooth shape deviation is 0.01mm and the blade crown deviation is 0.10mm after calculation. Through the improvement, the back tooth locating surface in the blade is fixed, and the deviation can not be caused.
4. The She Guanding tip tightening device is omitted, and deflection of the tip shroud caused in the tip tightening process is avoided. At present, the blade tip naturally sags, the clamping force direction is consistent with the gravity direction, and deflection cannot be generated.
Drawings
Fig. 1 is a schematic connection diagram of a blade root positioning seat 1, a jack bolt 2, a measuring tool body 3 and a tooth block 8.
FIG. 2 is a schematic view showing the fixed connection of the gauge body 3 and the L-shaped fixing block 4.
Fig. 3 is a schematic view showing the connection of the gauge body 3 and the L-shaped fixing block 4 via the cylindrical pin 5, the screw 6 and the fixing frame 7.
Fig. 4 is a schematic view of the mounting of the tooth block 8 on the blade root positioning seat 1.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1-4, and the fir tree type blade root blade profile measuring and fixing clamp comprises a blade root positioning seat 1, a jacking bolt 2, a measuring tool body 3 and a tooth block 8; the concrete 3 vertical setting of volume, the top at the concrete 3 of volume is installed to blade root positioning seat 1, and tooth piece 8 inlays the dress on blade root positioning seat 1, and the threaded connection of jack bolt 2 installs on blade root positioning seat 1, and the screw thread end top of jack bolt 2 is on tooth piece 8 up end, and fir tree type blade root is vertical installs on blade root positioning seat 1 and tooth piece 8.
The tooth piece 8 of this application utilizes current location tooth piece to carry out linear cutting at the second tooth along the lower picture, carries out spot welding with the tooth piece both sides that cut off, and 6 solder joints of single face grind again and make tooth piece both sides and tooth piece both sides close fit clearance be less than 0.02mm, tightly compress tightly tooth piece upper surface through the bolt top, make its downstream, compress tightly the non-working face of blade profile of tooth, press from both sides tightly and fix the blade, make the blade fixed through this clamping method to avoid the displacement to appear in the blade measurement process, the advantage is that the slider moves down perpendicularly along both sides, because the clearance is less than 0.02mm, the packing force is balanced.
The second embodiment is as follows: referring to fig. 2, the present embodiment is described, and the present embodiment is a fir tree type blade root blade profile measuring fixture, which further includes an L-shaped fixing block 4; the measuring body 3 is fixedly connected with the L-shaped fixed block 4. Other compositions and connection modes are the same as in the first embodiment.
And a third specific embodiment: referring to fig. 3, the present embodiment is described, and the present embodiment is a fir tree type blade root blade profile measuring fixture, which further includes a fixing frame 7 and two fixing bolts; two fixing bolts are arranged on the fixing frame 7, the fixing bolt measuring body 3 and the L-shaped fixing block 4 are fixedly connected through the fixing frame 7, and the threaded ends of the fixing bolts are propped against the L-shaped fixing block 4. Other compositions and connection modes are the same as those of the second embodiment.
The specific embodiment IV is as follows: referring to fig. 3, the present embodiment is described as a fir tree type blade root blade profile measuring and fixing clamp, which further includes a plurality of cylindrical pins 5 and a plurality of screws 6; the measuring body 3 is fixedly connected with the blade root positioning seat 1 through screws 6, and each cylindrical pin 5 is inserted on the measuring body 3 and the blade root positioning seat 1. Other compositions and connection modes are the same as those of the third embodiment.
Fifth embodiment: referring to fig. 1, this embodiment of a fixture for measuring and fixing a fir-tree type blade profile is described, where a blade root pressing tooth slot is machined on a tooth block 8, a blade root pressing tooth slot is machined at the bottom of the tooth block 8 on a blade root positioning seat 1, a fir-tree type blade root is installed in the blade root pressing tooth slot of the tooth block 8 and a blade root bottom installation tooth slot of the blade root positioning seat 1, and the tooth root pressing tooth slot of the tooth block 8 is pressed and fixed. . Other compositions and connection modes are the same as those of the second embodiment.
Specific embodiment six: referring to fig. 1 and 4, a description will be given of the present embodiment of a fixture for measuring a fir tree type blade root blade profile, in which the blade root of a tooth block 8 is pressed against the tooth slot end surface profile edge to be subjected to dulling treatment. Other compositions and connection modes are the same as in the first embodiment.
Seventh embodiment: referring to fig. 1 and 2, the present embodiment of the present invention is a fixture for measuring a profile of a fir-tree type blade root, which further includes a plurality of positioning cylinders, wherein the plurality of positioning cylinders are vertically arranged in four rows and are inserted on a large plane on a side of the measuring body 3, and the blade root positioning seat 1 and the plurality of positioning cylinders are located on the same large plane on the same side, for fixing a detection template. Other compositions and connection modes are the same as in the first embodiment.
Principle of operation
Before working, the standard sample is placed on the measuring tool, and the clamping bolt on the tooth block is rotated to fasten the standard sample. The distance from the surface of the 'N' mark printed by the block gauge measuring sample to the two side surfaces of the measuring tool in the specific vertical direction meets the set value, and the distance from the surface of the 'C' mark printed by the block gauge measuring standard sample to the bottom surface of the measuring tool meets the design size. The measuring tool calibrated by the sample can be used, and during measurement, the tooth shape of the blade root is firstly scratched into the tooth block 8, and the blade root is pushed into the middle position of the steam inlet side by pressing a finger. The jacking bolt 2 is tightly jacked, and the blade is fixed. And loading a detection template to detect the sizes of various lines, and recording detection data. And further realizing blade profile measurement.
Claims (6)
1. The utility model provides a firtree-type blade root blade molded line measures mounting fixture which characterized in that: the device comprises a blade root positioning seat (1), a jacking bolt (2), a measuring tool body (3) and a tooth block (8); the device comprises a blade root positioning seat (1), a tooth block (8), a jacking bolt (2), a tooth block (8) and a tooth block (8), wherein the blade root positioning seat (1) is vertically arranged, the tooth block (1) is arranged at the top end of the blade root positioning seat (3), the tooth block (8) is embedded in the blade root positioning seat (1), the threaded connection of the jacking bolt (2) is arranged on the blade root positioning seat (1), the threaded end of the jacking bolt (2) is jacked on the upper end face of the tooth block (8), the fir-type blade root is vertically arranged on the blade root positioning seat (1) and the tooth block (8), the tooth block (8) is processed to form a blade root compacting tooth groove on the blade root positioning seat (1), and the fir-type blade root is arranged in the blade root bottom mounting tooth groove of the blade root positioning seat (1) to be compacted and fixed.
2. The fir tree root blade profile measuring fixture as defined in claim 1, wherein: it also comprises an L-shaped fixed block (4); the measuring body (3) is fixedly connected with the L-shaped fixed block (4).
3. The fir tree root blade profile measuring fixture as defined in claim 2, wherein: the device also comprises a fixed frame (7) and two fixed bolts; two fixing bolts are arranged on the fixing frame (7), the fixing bolt quantity body (3) is fixedly connected with the L-shaped fixing block (4) through the fixing frame (7), and the threaded ends of the fixing bolts are propped against the L-shaped fixing block (4).
4. The fir tree root blade profile measuring fixture as defined in claim 2, wherein: the novel screw bolt also comprises a plurality of cylindrical pins (5) and a plurality of screws (6); the measuring body (3) is fixedly connected with the blade root positioning seat (1) through screws (6), and each cylindrical pin (5) is inserted on the measuring body (3) and the blade root positioning seat (1).
5. The fir tree root blade profile measuring fixture as defined in claim 1, wherein: and (3) the blade root of the tooth block (8) is pressed to the end surface molded line edge of the tooth slot for dulling treatment.
6. The fir tree root blade profile measuring fixture as defined in claim 1, wherein: the blade root positioning device further comprises a plurality of positioning cylinders, the positioning cylinders are vertically arranged in four rows and are inserted on the large plane of the side face of the measuring body (3), and the blade root positioning seat (1) and the positioning cylinders are located on the large plane of the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111572942.3A CN114322698B (en) | 2021-12-21 | 2021-12-21 | Fir-type blade root blade molded line measuring and fixing clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111572942.3A CN114322698B (en) | 2021-12-21 | 2021-12-21 | Fir-type blade root blade molded line measuring and fixing clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114322698A CN114322698A (en) | 2022-04-12 |
| CN114322698B true CN114322698B (en) | 2023-07-25 |
Family
ID=81053988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111572942.3A Active CN114322698B (en) | 2021-12-21 | 2021-12-21 | Fir-type blade root blade molded line measuring and fixing clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114322698B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265023A (en) * | 1979-04-23 | 1981-05-05 | United Technologies Corporation | Turbine blade growth measuring apparatus and method |
| CN102564260A (en) * | 2012-01-29 | 2012-07-11 | 无锡透平叶片有限公司 | Detection apparatus of arc tenon-tooth blade-root molded line and intermediate molded line |
| CN203053376U (en) * | 2013-02-20 | 2013-07-10 | 哈尔滨哈汽叶片加工有限公司 | Tool for detecting arcs of blade root bosses of gas turbine blade |
| JP2013238173A (en) * | 2012-05-16 | 2013-11-28 | Mitsubishi Heavy Ind Ltd | Method of manufacturing blade for rotary machine and casting jig for balance weight used therefor |
| CN203572356U (en) * | 2013-10-30 | 2014-04-30 | 东方电气集团东方汽轮机有限公司 | Longitudinal tree type blade root and blade composite measuring tool |
| CN203587019U (en) * | 2013-11-18 | 2014-05-07 | 四川绵竹鑫坤机械制造有限责任公司 | Measuring tool for comprehensive detection of rotor blade of compressor |
| CN107674959A (en) * | 2017-09-25 | 2018-02-09 | 哈尔滨汽轮机厂有限责任公司 | One kind is used for big blade heat treatment shaping instrument |
| CN207487562U (en) * | 2017-08-02 | 2018-06-12 | 南通中能机械制造有限公司 | A kind of blade profile molded line measures special measuring tool |
| CN109500682A (en) * | 2018-11-14 | 2019-03-22 | 中国航发动力股份有限公司 | A kind of antifatigue method improving tenon peg type construction rotor blade |
| DE102017223711A1 (en) * | 2017-12-22 | 2019-06-27 | Siemens Aktiengesellschaft | Method for measuring a fir-tree-shaped blade root, measuring device and system comprising such a |
| CN110631933A (en) * | 2019-09-20 | 2019-12-31 | 北京航空航天大学 | High-temperature large-load test fixture and test method for turbine blade joggle joint structure |
| CN211953931U (en) * | 2020-05-21 | 2020-11-17 | 哈尔滨汽轮机厂有限责任公司 | Measuring tool for detecting moving blade with water outlet hole |
| CN213179743U (en) * | 2020-10-22 | 2021-05-11 | 华瑞（江苏）燃机服务有限公司 | Blade top measuring device for gas turbine |
-
2021
- 2021-12-21 CN CN202111572942.3A patent/CN114322698B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265023A (en) * | 1979-04-23 | 1981-05-05 | United Technologies Corporation | Turbine blade growth measuring apparatus and method |
| CN102564260A (en) * | 2012-01-29 | 2012-07-11 | 无锡透平叶片有限公司 | Detection apparatus of arc tenon-tooth blade-root molded line and intermediate molded line |
| JP2013238173A (en) * | 2012-05-16 | 2013-11-28 | Mitsubishi Heavy Ind Ltd | Method of manufacturing blade for rotary machine and casting jig for balance weight used therefor |
| CN203053376U (en) * | 2013-02-20 | 2013-07-10 | 哈尔滨哈汽叶片加工有限公司 | Tool for detecting arcs of blade root bosses of gas turbine blade |
| CN203572356U (en) * | 2013-10-30 | 2014-04-30 | 东方电气集团东方汽轮机有限公司 | Longitudinal tree type blade root and blade composite measuring tool |
| CN203587019U (en) * | 2013-11-18 | 2014-05-07 | 四川绵竹鑫坤机械制造有限责任公司 | Measuring tool for comprehensive detection of rotor blade of compressor |
| CN207487562U (en) * | 2017-08-02 | 2018-06-12 | 南通中能机械制造有限公司 | A kind of blade profile molded line measures special measuring tool |
| CN107674959A (en) * | 2017-09-25 | 2018-02-09 | 哈尔滨汽轮机厂有限责任公司 | One kind is used for big blade heat treatment shaping instrument |
| DE102017223711A1 (en) * | 2017-12-22 | 2019-06-27 | Siemens Aktiengesellschaft | Method for measuring a fir-tree-shaped blade root, measuring device and system comprising such a |
| CN109500682A (en) * | 2018-11-14 | 2019-03-22 | 中国航发动力股份有限公司 | A kind of antifatigue method improving tenon peg type construction rotor blade |
| CN110631933A (en) * | 2019-09-20 | 2019-12-31 | 北京航空航天大学 | High-temperature large-load test fixture and test method for turbine blade joggle joint structure |
| CN211953931U (en) * | 2020-05-21 | 2020-11-17 | 哈尔滨汽轮机厂有限责任公司 | Measuring tool for detecting moving blade with water outlet hole |
| CN213179743U (en) * | 2020-10-22 | 2021-05-11 | 华瑞（江苏）燃机服务有限公司 | Blade top measuring device for gas turbine |
Non-Patent Citations (1)
| Title |
|---|
| 大型煤气膨胀透平动叶片制造工艺的分析;顾芸曼;上海汽轮机(第01期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114322698A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203443507U (en) | Combined detection measuring tool of steam turbine blade with dovetail-shaped blade root | |
| CN104191264B (en) | A kind of processing Gas Turbine Power turbine guide vane sheet reference plane clamping and positioning device | |
| CN210307331U (en) | Turbine blade side grinding positioning and clamping device | |
| CN203572356U (en) | Longitudinal tree type blade root and blade composite measuring tool | |
| CN202304709U (en) | Detecting tool for detecting sewing machine tooth frame | |
| CN112461093A (en) | Blade space angle measuring device of blade ring structure part | |
| CN114322698B (en) | Fir-type blade root blade molded line measuring and fixing clamp | |
| CN201417130Y (en) | Measuring tool for measuring chamfer angle | |
| CN109341478B (en) | Turbine blade size measuring device and measuring method | |
| CN104191314B (en) | A kind of Gas Turbine Power turbine guide vane sheet datum level positioning and processing method | |
| CN209857836U (en) | Utensil is examined to cylinder head disk seat hole and pipe hole axiality | |
| CN210108186U (en) | Detection device for detecting position precision of small end inclined plane of connecting rod | |
| CN206270295U (en) | Aero engine turbine blades eddy current inspection test block fixture | |
| CN219714253U (en) | Comb gap measuring ruler | |
| CN203615853U (en) | Gas turbine power turbine rotor wheel groove detector | |
| CN208155199U (en) | A kind of axial dimension measuring device | |
| CN213196578U (en) | Device for processing turbine moving blade assembly surface | |
| CN113532269A (en) | Sample plate for measuring movable blade shroud of steam turbine | |
| CN217358372U (en) | Integrated measuring tool for arc and end surface of guide vane | |
| CN212645608U (en) | Forward-pushing type digital display measuring tool | |
| CN216012040U (en) | Height measuring tool for compressor rotor blade | |
| CN214669133U (en) | Installation and measuring tool for speed measuring probe of fluted disc of hydropower station | |
| CN218847079U (en) | Device for detecting small-end inclined plane of connecting rod of variable compression ratio engine | |
| CN216620947U (en) | Measuring tool for measuring diameter size of inclined plane of inverted conical surface | |
| CN219170325U (en) | Parallelism gauge of roller knife |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230103 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Applicant after: HARBIN TURBINE Co.,Ltd. Applicant after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Applicant before: HARBIN TURBINE Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |